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Nat Biotechnol. 2003 Oct;21(10):1200-7. Epub 2003 Sep 21.

Neural subtype specification of fertilization and nuclear transfer embryonic stem cells and application in parkinsonian mice.

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Laboratory of Stem Cell and Tumor Biology, Division of Neurosurgery and Developmental Biology Program, Weill Medical College of Cornell University, New York, New York 10021, USA.


Existing protocols for the neural differentiation of mouse embryonic stem (ES) cells require extended in vitro culture, yield variable differentiation results or are limited to the generation of selected neural subtypes. Here we provide a set of coculture conditions that allows rapid and efficient derivation of most central nervous system phenotypes. The fate of both fertilization- and nuclear transfer-derived ES (ntES) cells was directed selectively into neural stem cells, astrocytes, oligodendrocytes or neurons. Specific differentiation into gamma-aminobutyric acid (GABA), dopamine, serotonin or motor neurons was achieved by defining conditions to induce forebrain, midbrain, hindbrain and spinal cord identity. Neuronal function of ES cell-derived dopaminergic neurons was shown in vitro by electron microscopy, measurement of neurotransmitter release and intracellular recording. Furthermore, transplantation of ES and ntES cell-derived dopaminergic neurons corrected the phenotype of a mouse model of Parkinson disease, demonstrating an in vivo application of therapeutic cloning in neural disease.

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